Sparse writing

This page lists some of the things I've written. There is a hiatus due to stuff I blogged about at 42 (a previous employer).
Otherwise, the things I consider most important to write about will (eventually) find a place here.

13 jan 2011

Persistence API's - JPA vs. JDO

An overview of differences between JDO and JPA, and why JPA is the better choice.

Implementing equals and hashCode

A somewhat old subject, especially considering two of the referenced pages are from 2002. But nevertheless still
often done wrong today. Also explains how to implement equals and hashCode() for
persistent entities (EJB / JPA @Entity classes).

Authentication (a few notes)

Authentication, or verification of who a user is, is a key element in enforcing access controls. While
application servers offer a great deal, and much documentation can be found on the subject, it is crucial to
keep a few things in mind.